It's like "bomb cyclone" or "firenado." It seems like the sort of phenomenon that would be responsible for the ...

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the South.

Another polar vortex disruption will stretch Arctic air ... plunge from north to south like a roller coaster. On the east side of that plunge is cold air and potentially record high pressure ...

Another polar vortex disruption will stretch Arctic air ... plunge from north to south like a roller coaster. On the east side of that plunge is cold air and potentially record high pressure ...